package org.example.reggie.controller;


import lombok.extern.slf4j.Slf4j;
import org.example.reggie.common.R;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

import javax.servlet.ServletOutputStream;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.util.UUID;
import java.util.logging.Handler;

@Slf4j
@RestController
@RequestMapping("/common")
public class CommonController {


    @Value("${reggie.path}")
    private String basePath;

    @PostMapping("/upload")
    public R<String> upload(MultipartFile file) throws IOException {
        log.info(file.toString());

        String originalFilename = file.getOriginalFilename();

        String suffix = originalFilename.substring(originalFilename.lastIndexOf("."));

        String filename = UUID.randomUUID().toString()+suffix;


        File dir=new File(basePath);
        if (!dir.exists()){
            dir.mkdirs();
        }

        try {
            file.transferTo(new File(basePath+filename));
        }catch(IOException e){
            e.printStackTrace();
        }
        return R.success(filename);
    }


    @GetMapping("/download")
    public void download(String name , HttpServletResponse response){
       try {
           FileInputStream fileInputStream = new FileInputStream(new File(basePath+name));

           ServletOutputStream outputStream = response.getOutputStream();

           response.setContentType("image/jpeg");

           int len=0;
           byte[] bytes =new byte[1024];
           while ((len = fileInputStream.read(bytes))!=-1){
               outputStream.write(bytes,0,len);
               outputStream.flush();
           }
           outputStream.close();
           fileInputStream.close();


       }catch ( Exception e){
           e.printStackTrace();
       }


    }

}
